Steel Pipe | McMaster-Carr

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25,784 Products

Fluid Handling

Pipe Nipples and Pipe

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

4,821 products

Pipe Fittings

Form threaded, barbed, flanged, and other types of connections between lengths of pipe

6,554 products

Pipe Flanges

Create an access point in a line by bolting two same-size flanges together with a gasket

905 products

Pipe Plugs

Insert into the ends of pipe to keep out dirt and debris

817 products

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

353 products

Expansion Joints

Reduce stress, vibration, and noise in piping systems by absorbing movement

88 products

Pipe Fitting Clamps

Connect easy-access and grooved-end pipe fittings to pipe

2 products

Tubing

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

1,138 products

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

4,966 products

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

2,154 products

Duct Hose and Fittings

Connect to blowers and vacuums to move air, fumes, dust, chips, and liquids

124 products

Gauge Siphon Tubes

Fill with water to protect dry gauges from steam and high-temperature liquids; also called pigtails

24 products

Orifice Valves

Restrict the flow of liquids and gases to precisely control rate and pressure

24 products

Raw Materials

Steel

Strong, machinable, and weldable—all with material certificates for traceability

305 products

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

290 products

Heating, Ventilation, and Air Conditioning

Duct and Duct Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

1,437 products

Chimney Pipe and Fittings

Exhaust hot air and fumes from boilers, furnaces, and stoves

12 products

Diffuser Collars

Connect diffusers to duct

4 products

Building and Machinery Hardware

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

8 products

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

55 products

Weld-Together Framing and Fittings

Permanently join rails and fittings to assemble heavy duty racks, shelving, and work tables

18 products

Electrical

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

153 products

Facility and Grounds Maintenance

Sink Drain Tailpieces

Connect drains to P-traps and S-traps

3 products

Sink Drains

Empty liquids from sinks into sewer lines

15 products